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x

y

(◻)

◻/◻

◻^{2}

◻^{◻}

√◻

∞

e

π

ln

log

lim

d/dx

d^{□}/dx^{□}

∫

∫^{◻}

>

<

>=

<=

sin

cos

tan

cot

sec

csc

asin

acos

atan

acot

asec

acsc

sinh

cosh

tanh

coth

sech

csch

asinh

acosh

atanh

acoth

asech

acsch

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$21-6x=27-8x$

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